A5054828860- Advanced MRI Techniques and Applications
- Advanced NMR Techniques and Applications
- Advanced Neuroimaging Techniques and Applications
- Multiple Sclerosis Research Studies
- Atomic and Subatomic Physics Research
- Lanthanide and Transition Metal Complexes
- NMR spectroscopy and applications
- Functional Brain Connectivity Studies
- Reproductive Biology and Fertility
- Traumatic Brain Injury and Neurovascular Disturbances
- MRI in cancer diagnosis
- RNA regulation and disease
- Ovarian function and disorders
- Electron Spin Resonance Studies
- Traumatic Brain Injury Research
- Polyomavirus and related diseases
- Tryptophan and brain disorders
- Assisted Reproductive Technology and Twin Pregnancy
- Medical Imaging Techniques and Applications
- Neuroscience and Neuropharmacology Research
- Photochemistry and Electron Transfer Studies
- Quantum, superfluid, helium dynamics
- Spectroscopy and Quantum Chemical Studies
- Photosynthetic Processes and Mechanisms
- Sperm and Testicular Function
New York University
2014-2025
Advanced Imaging Research (United States)
2015-2023
NYU Langone Health
2007-2021
Indiana University School of Medicine
2020
Meir Medical Center
1997-2019
Medeniyet Üniversitesi Göztepe Eğitim ve Araştırma Hastanesi
2018
Istanbul Medeniyet University
2018
Riverside Regional Medical Center
2017
Brigham and Women's Hospital
2017
Case Western Reserve University
2017
Object. Diffuse axonal injury (DAI) is a major complication of traumatic brain (TBI) that leads to functional and psychological deficits. Although DAI frequently underdiagnosed by conventional imaging modalities, it can be demonstrated using diffusion tensor imaging. The aim this study was assess the presence extent in patients with mild TBI. Methods. Forty-six TBI 29 healthy volunteers underwent magnetic resonance (MR) protocol including: dual—spin echo, fluid-attenuated inversion recovery,...
BACKROUNDThe aim of this study was to evaluate the effect dehydroepiandrosterone (DHEA) supplementation on in vitro fertilization (IVF) data and outcomes among poor-responder patients.
Purpose To assess the diagnostic performance of callosal angle (CA) and Evans index (EI) measures to determine their role versus automated volumetric methods in clinical radiology. Materials Methods Magnetic resonance (MR) examinations performed before surgery (within 1-5 months MR examination) 36 shunt-responsive patients with normal-pressure hydrocephalus (NPH; mean age, 75 years; age range, 58-87 26 men, 10 women) age- sex-matched Alzheimer disease (n = 34) healthy control volunteers 36)...
<b><i>Objective:</i></b> To quantitate the extent of neuronal cell loss in MS via whole brain's <i>N</i>-acetylaspartate (NAA) concentration (WBNAA). <b><i>Methods:</i></b> Because NAA is assumed to be present only bodies and their axons, we measured WBNAA as a marker for viable neurons 12 patients (9 women 3 men, 26 53 years age) suffering from relapsing-remitting (RR) at least 5 compared them with 13 age- sex-matched normal controls. Total brain was determined proton MR spectroscopy,...
Macrosomia at term is associated with increased maternal and neonatal morbidity, including a higher rate of cesarean delivery shoulder dystocia. Induction labor has been suggested as means to prevent further weight gain improve outcome. The aim this study was determine whether or not induction in these cases improves Patients an ultrasonic fetal estimation 4000–4500 g were prospectively randomized into two groups: (group I) expectant management II). diabetes, previous delivery, nonvertex...
To characterize and follow the diffuse gray white matter (GM/WM) metabolic abnormalities in early relapsing-remitting multiple sclerosis using proton magnetic resonance spectroscopic imaging ((1)H-MRSI).Eighteen recently diagnosed, mildly disabled patients (mean baseline time from diagnosis 32 months, mean Expanded Disability Status Scale [EDSS] score 1.3), all on immunomodulatory medication, were scanned semiannually for 3 years with T1-weighted T2-weighted MRI 3D (1)H-MRSI at T. Ten sex-...
To obtain quantitative neurometabolite measurements, specifically myoinositol (mI) and glutamate plus glutamine (Glx), markers of glial neuronal excitation, in deep gray matter structures after mild traumatic brain injury (mTBI) using proton magnetic resonance spectroscopy ((1)H-MRS) to compare these measurements against normal healthy control subjects.This study approved by the institutional review board is Health Insurance Portability Accountability Act compliant. T1-weighted MRI...
IVF cycles which result in only one good quality embryo, and a second poor embryo present dilemma when the decision involves transferring two embryos. The aim of this study was to evaluate whether has negative effect on transferred along with embryo.We retrospectively evaluated vitro fertilization (IVF) involving single transfers (SET) double (DET). Embryo divided into "P" "G" quality. main outcome measures were: live birth, implantation rate, miscarriage clinical pregnancy rate multiple...
Abstract It is well known that multiple sclerosis (MS) pathogenesis continues even during periods of clinical silence. To quantify the metabolic characteristics this activity we compared absolute levels N ‐acetylaspartate (NAA), creatine (Cr), and choline (Cho) in normal‐appearing white matter (NAWM) between relapsing‐remitting (RR) MS patients controls. Metabolite concentrations were obtained with 3D proton MR spectroscopy at 1.5 T a 480 cm 3 volume‐of‐interest (VOI), centered on corpus...
Proton magnetic resonance spectroscopy ((1)H-MRS) has been increasingly used to examine striatal neurochemistry in adult major depressive disorder. This study extends the use of this modality pediatric depression test hypothesis that adolescents with have elevated concentrations choline and creatine lower N-acetylaspartate.Fourteen (ages 12-19 years, eight female) who had disorder for at least 8 weeks a severity score 40 or higher on Children's Depression Rating Scale-Revised 10 healthy...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTime-resolved EPR spectroscopy of electron spin polarized ZnTPP triplets oriented in a liquid crystalOded Gonen and Haim LevanonCite this: J. Phys. Chem. 1985, 89, 9, 1637–1643Publication Date (Print):April 1, 1985Publication History Published online1 May 2002Published inissue 1 April 1985https://pubs.acs.org/doi/10.1021/j100255a017https://doi.org/10.1021/j100255a017research-articleACS PublicationsRequest reuse permissionsArticle...
A study of laser photoexcitation-EPR diode detection the transient triplet state hybrid covalenty linked porphyrin dimer [ZnP–H2P] in a uniaxial liquid crystal and glass matrix at 100 10 K, is reported. This time resolved technique enables monitoring behavior magnetization until thermal relaxation sets in. Selective singlet excitation components reveals energy transfer process [ZnP*−H2P]–––ket→ZnP–H2P*, whose rate K calculated to be [1.0±0.2]×109 s−1. Triplet line shape analysis subunit...
Although recent studies indicate that use of a single global transverse relaxation time, T(2), per metabolite is sufficient for better than +/-10% quantification precision at intermediate and short echo-time spectroscopy in young adults, the age-dependence this finding unknown. Consequently, age effect on regional brain choline (Cho), creatine (Cr), N-acetylaspartate (NAA) T(2)s was examined four groups using 3D (four slices, 80 voxels 1 cm(3) each) proton MR an optimized two-point protocol....
Since the brain's gray matter (GM) and white (WM) metabolite concentrations differ, their partial volumes can vary voxel's 1 H MR spectroscopy ( H‐MRS) signal, reducing sensitivity to changes. While single‐voxel H‐MRS cannot differentiate between WM GM signals, volume correction is feasible by spectroscopic imaging (MRSI) using segmentation of MRI acquired for VOI placement. To determine magnitude this effect on metabolic quantification, we segmented a 1‐mm 3 resolution into GM, CSF masks...
There are no established biomarkers for mild traumatic brain injury (mTBI), in part because post-concussive symptoms (PCS) subjective and conventional imaging is typically unremarkable. To test whether diffuse axonal abnormalities quantified with three-dimensional (3D) proton magnetic resonance spectroscopic (¹H-MRSI) correlated patients' PCS, we retrospectively studied 26 mTBI patients (mean Glasgow Coma Scale [GCS] score of 14.7), 18- to 56-year-olds 13 controls three 55 days post-injury....